S-90124A331 1/2"-13 x 1" ASME B18.2.1, SAE J429 Steel Wire-Lockable Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with 120,000 PSI tensile strength for reliable performance in demanding applications
• Superior corrosion resistance from black-oxide steel coating, extending service life in harsh industrial environments
• Optimal thread engagement with UNC coarse spacing and Class 2A fit for faster assembly and secure fastening
• Enhanced torque transmission through external hex drive design, preventing tool slippage during installation
• Full-threaded construction ensuring maximum grip length and uniform stress distribution along the entire fastener
• Industry-standard compliance meeting ASME B18.2.1 and RoHS 3 regulations for quality assurance and environmental safety
• Consistent hardness performance with Rockwell C25 rating maintaining structural integrity under repeated loading

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, this Grade 5 hex head screw delivers exceptional mechanical performance where reliability is paramount. The black-oxide steel construction provides superior protection against corrosion in manufacturing facilities, construction sites, and machinery assembly. With its UNC coarse thread pattern and Class 2A fit, installation becomes significantly more efficient while maintaining precise tolerance requirements. The external hex drive design ensures maximum torque application without cam-out, making it ideal for high-vibration environments and structural connections requiring 120,000 PSI tensile strength. These fully threaded screws offer consistent clamping force distribution, preventing joint failure in critical assemblies across automotive, industrial equipment, and structural steel applications.

Specification Summary & Compliance

This 1/2"-13 hex head screw features precision UNC coarse threading with Class 2A tolerance for reliable fitment. Manufactured to meet ASME B18.2.1 specifications and SAE J429 Grade 5 requirements, ensuring dimensional accuracy and mechanical performance. The fastener is RoHS 3 (2015/863/EU) Compliant for environmental safety and regulatory adherence. With Rockwell C25 hardness and fully threaded construction, it maintains consistent performance across industrial applications requiring high-strength fastening solutions.